From 470be03c2ff22346a1f0ae53fa25f53c4d1790b5 Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Mon, 26 Dec 2022 18:50:27 +0000
Subject: GPU: Add fallback when 16-bit formats are not supported (#4108)

* Add conversion for 16 bit RGBA formats (not supported in Rosetta)

* Rebase fix

Rebase fix

* Forgot to remove this

* Fix RGBA16 format conversion

* Add RGBA4 -> RGBA8 conversion

* Handle host stride alignment

* Address Feedback Part 1

* Can't count

* Don't zero out rgb when alpha is 0

* Separate RGBA4 and 5-bit component formats

Not sure of a better way to name them...

* Add A1B5G5R5 conversion

* Put this in the right place.

* Make format naming consistent for capabilities

* Change method names
---
 Ryujinx.Graphics.Vulkan/VulkanRenderer.cs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'Ryujinx.Graphics.Vulkan/VulkanRenderer.cs')

diff --git a/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs b/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs
index a32400f5..3c446abf 100644
--- a/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs
+++ b/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs
@@ -396,6 +396,17 @@ namespace Ryujinx.Graphics.Vulkan
                 GAL.Format.Etc2RgbSrgb,
                 GAL.Format.Etc2RgbUnorm);
 
+            bool supports5BitComponentFormat = FormatCapabilities.OptimalFormatsSupport(compressedFormatFeatureFlags,
+                GAL.Format.R5G6B5Unorm,
+                GAL.Format.R5G5B5A1Unorm,
+                GAL.Format.R5G5B5X1Unorm,
+                GAL.Format.B5G6R5Unorm,
+                GAL.Format.B5G5R5A1Unorm,
+                GAL.Format.A1B5G5R5Unorm);
+
+            bool supportsR4G4B4A4Format = FormatCapabilities.OptimalFormatsSupport(compressedFormatFeatureFlags,
+                GAL.Format.R4G4B4A4Unorm);
+
             PhysicalDeviceVulkan12Features featuresVk12 = new PhysicalDeviceVulkan12Features()
             {
                 SType = StructureType.PhysicalDeviceVulkan12Features
@@ -425,7 +436,9 @@ namespace Ryujinx.Graphics.Vulkan
                 supports3DTextureCompression: true,
                 supportsBgraFormat: true,
                 supportsR4G4Format: false,
+                supportsR4G4B4A4Format: supportsR4G4B4A4Format,
                 supportsSnormBufferTextureFormat: true,
+                supports5BitComponentFormat: supports5BitComponentFormat,
                 supportsFragmentShaderInterlock: Capabilities.SupportsFragmentShaderInterlock,
                 supportsFragmentShaderOrderingIntel: false,
                 supportsGeometryShaderPassthrough: Capabilities.SupportsGeometryShaderPassthrough,
-- 
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